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All results from a given calculation for CH3OCH2CN (Methoxyacetonitrile)

using model chemistry: QCISD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS 1A'
1 2 yes C1 1A

Conformer 1 (CS)

Jump to S1C2
Energy calculated at QCISD/cc-pVTZ
 hartrees
Energy at 0K-246.825013
Energy at 298.15K-246.830596
HF Energy-245.881775
Nuclear repulsion energy157.411767
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at QCISD/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3166 3025 16.30      
2 A' 3026 2892 33.75      
3 A' 3016 2882 34.86      
4 A' 2353 2248 0.86      
5 A' 1538 1470 4.61      
6 A' 1521 1454 5.79      
7 A' 1498 1431 0.10      
8 A' 1437 1373 42.77      
9 A' 1253 1198 68.61      
10 A' 1189 1137 110.57      
11 A' 1026 980 31.58      
12 A' 960 917 7.16      
13 A' 546 522 1.26      
14 A' 381 364 2.01      
15 A' 181 173 2.57      
16 A" 3075 2938 36.54      
17 A" 3058 2922 29.42      
18 A" 1512 1445 7.48      
19 A" 1285 1228 3.55      
20 A" 1201 1147 4.20      
21 A" 1052 1005 2.40      
22 A" 366 350 1.92      
23 A" 223 214 3.78      
24 A" 87 83 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 17475.1 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 16697.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at QCISD/cc-pVTZ
ABC
0.99482 0.08250 0.07843

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.127 -0.334 0.000
O2 -0.740 -0.605 0.000
C3 0.000 0.584 0.000
C4 1.435 0.256 0.000
N5 2.569 0.036 0.000
H6 -2.638 -1.292 0.000
H7 -2.420 0.231 0.891
H8 -2.420 0.231 -0.891
H9 -0.214 1.193 -0.886
H10 -0.214 1.193 0.886

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.41342.31683.61034.71051.08601.09481.09482.60252.6025
O21.41341.40072.33903.37032.01892.07752.07752.07182.0718
C32.31681.40071.47172.62683.23762.60302.60301.09571.0957
C43.61032.33901.47171.15544.35753.95663.95662.09312.0931
N54.71053.37032.62681.15545.37395.07185.07183.14163.1416
H61.08602.01893.23764.35755.37391.77791.77793.58253.5825
H71.09482.07752.60303.95665.07181.77791.78112.99092.4063
H81.09482.07752.60303.95665.07181.77791.78112.40632.9909
H92.60252.07181.09572.09313.14163.58252.99092.40631.7714
H102.60252.07181.09572.09313.14163.58252.40632.99091.7714

picture of Methoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 110.829 O2 C1 H6 107.033
O2 C1 H7 111.218 O2 C1 H8 111.218
O2 C3 C4 109.011 O2 C3 H9 111.597
O2 C3 H10 111.597 C3 C4 N5 178.122
C4 C3 H9 108.331 C4 C3 H10 108.331
H6 C1 H7 109.229 H6 C1 H8 109.229
H7 C1 H8 108.868 H9 C3 H10 107.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD/cc-pVTZ
 hartrees
Energy at 0K-246.827235
Energy at 298.15K 
HF Energy-245.883292
Nuclear repulsion energy160.282072
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at QCISD/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD/cc-pVTZ
ABC
0.40324 0.11318 0.09561

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.554 -0.773 0.136
O2 1.082 0.434 -0.438
C3 -0.052 0.927 0.211
C4 -1.240 0.054 0.034
N5 -2.162 -0.631 -0.096
H6 2.455 -1.046 -0.405
H7 0.818 -1.575 0.039
H8 1.796 -0.634 1.194
H9 -0.277 1.901 -0.218
H10 0.115 1.050 1.286

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.41722.34012.91613.72651.08591.09291.09453.25992.5918
O21.41721.39702.40003.43182.01892.08142.07702.01182.0710
C32.34011.39701.48442.64053.24962.65462.61111.08761.0952
C42.91612.40001.48441.15623.88082.62533.32212.09802.0966
N53.72653.43182.64051.15624.64663.12944.16293.15923.1497
H61.08592.01893.24963.88084.64661.77691.77874.02283.5680
H71.09292.08142.65462.62533.12941.77691.78223.65332.9899
H81.09452.07702.61113.32214.16291.77871.78223.56562.3806
H93.25992.01181.08762.09803.15924.02283.65333.56561.7721
H102.59182.07101.09522.09663.14973.56802.98992.38061.7721

picture of Methoxyacetonitrile state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 112.512 O2 C1 H6 106.774
O2 C1 H7 111.381 O2 C1 H8 110.911
O2 C3 C4 112.764 O2 C3 H9 107.481
O2 C3 H10 111.825 C3 C4 N5 179.481
C4 C3 H9 108.324 C4 C3 H10 107.774
H6 C1 H7 109.277 H6 C1 H8 109.324
H7 C1 H8 109.121 H9 C3 H10 108.550
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability